Convert //ash from scoped_ptr to std::unique_ptr

ash/frame/caption_buttons/frame_caption_button_container_view.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
 #define ASH_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
 
 #include <map>
 
 #include "ash/ash_export.h"
@@ skipping 130 matching lines @@
   FrameCaptionButton* minimize_button_;
   FrameCaptionButton* size_button_;
   FrameCaptionButton* close_button_;
 
   // Mapping of the image ID needed to paint a button for each of the values of
   // CaptionButtonIcon.
   std::map<CaptionButtonIcon, gfx::VectorIconId> button_icon_id_map_;
 
   // Animation that affects the position of |minimize_button_| and the
   // visibility of |size_button_|.
-  scoped_ptr<gfx::SlideAnimation> maximize_mode_animation_;
+  std::unique_ptr<gfx::SlideAnimation> maximize_mode_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameCaptionButtonContainerView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_